herbert chase



(No Model.)

J. H. CHASE.-

DEVICE FOR CONVERTING REUIPROGATING MOTION INTO ROTARY.

No. 267,835. v Patented Nov. 21, 1882,.

ix? 47% I f/weizfor per 6m UNITED STATES PATENT OFFICE.

J. HERBERT CHASE, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO WALTER F. ABBOT, OF N YORK, N.

DEVICE FOR CONVERTING RECIPROCATING MOTION INTO ROTARY.

SPECIFICATION forming part of Letters Patent No. 267,835, dated November 21, 1882. Application filed October 2, 1882. (No model.)

To all whom ti may concern Be it known that I, J. HERBERT CHASE, of Montreal, in the county of Montreal and Dominion of Canada, have invented certain new and useful Improvements in Devices for (Jonvertiug Reciprocatory Motion to Rotary, of which the following is a full, clear, and exact description.

This improved device is composed of a pulley-wheel, a friction-shoe, and a tilting frame, constructed and arranged together substantial] y as hereinafter described,reference being had to the accompanying plate of drawings, in which V Figure 1 is a vertical section, and Fig. 2 is a plan view. Fig. 3 is a detail side view.

In the drawings, A is a pulley-wheel, securely attached to a shaft, B, arranged to turn in bearing blocks or standards'G. D is a frame swinging freely by its arms E on said shaft. F is a roller carried bysaid frame and pivoted between its arms E.

G is a block or shoe situated between the roller F and the periphery a of the pulleywheel. The inner face, I), of the shoeis shaped to fit the periphery a of the pulley A, and the outer face, d, from end to end, or in the direction of the rotation of the pulley, is made of a wedge shape in relation to its inner face-or, in other words, eccentric to the axis of rotation of the pulley-wheel.

H is a balancewheel secured to said shaft B.

L is a pitman-rod connecting one end of'said frame to a treadle-lever, M, which has its fulcrum at f, and is depressed against a bent spring, g, and lifted by the reaction of said spring. By the movement of the treadle M the frame is tiltedor swung forward and backward upon the axle B, which depression or forward movement of the frame D carries the roller F toward the thickest'end of the shoe 'G, thus causing the shoeto grip closely the face of the pulley A and-impelling it forward. The backward movement of the frame carries the roller toward the thin end of the shoe, which, being thus released, drops of its own weight into position'for the next movement of the frame. To aid in the prompt return of the shoe G, following the backward motion of the frame D, and also to guard against accidental escape, a pin, his arranged to project from the side of the shoe G, below the under side of frame D, which, though allowing of free movement of shoe G, insures its return to place by engaging with frameD in its backward motion.

By means of a balance-wheel, H, which is secured to shaft B, the motion imparted to pulley A by the depression of the frame D is maintained, and by the use of two treadlesas, for instance, in an organand two of the before-described devices a constant and noiseless rotarymotion is imparted to the shaft, which, it is evident, cannot be driven in the wrong direction nor stop on a dead-center; also, the shoe grips the wheel at any part of its motionequally well, its gravity always keeping it in close proximity to the face of the pulley on the one side and the roller on the other, thus always in position for its use, and rendering a full movement of the treadles unnecessary. lhe movement of the shoe can be controlled by a rigid end piece offrame D in place ofroller F; or the shoe itself might be pivoted loosely in slots formedin the arms E; but a roller is preferable, because the shoe can release itself more easily.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1sv 1. The combination, with the pulley-wheel A and swinging frame D, of the shoe G, for operation substantially as described.

2. The combination of the pulley-wheel A and swinging frame D, carrying roller F, with shoe G, substantially as described, and for the purpose set forth.

3. The combination of the pulley-wheel A, swinging frame D, roller F, shoe G, and pin 1, substantially as described.

4. The combination of a pulley-wheel, A, and a shoe, G, having a face, b, fitting said pulley, and an eccentric face, d, in combination with a frame, D, carrying a roller, F, arranged to bear upon eccentric face at of said shoe, substantially as and for the purpose specified.

In testimony whereofl have hereunto set my hand in the presence of two subscribing witnesses.

J. H. CHASE.

Witnesses:

EDWIN W. BROWN, WM. S. BELLoWs. 

